The victims are students at Monterey Trail High School, which let students out for the day about 25 minutes before the teens were shot. The park is a popular spot and is just blocks away from the high school.

Investigators believe the pair and three other men, believed to be about 19 years old, got into a fight before the shooting happened.

Surveillance video shows the gunman, who is described as about 5 feet 7 inches tall, with a thin build and bushy, uncombed hair. He was wearing a white T-shirt, black pants and black athletic shoes, police said.

One man who was with him was described as 5 feet 10 inches tall, with medium-length dreadlocks with blond-died tips. He was wearing a black short-sleeve shirt, blue jeans and black athletic shoes, according to investigators.

The third man involved in the incident was described as 5 feet 9 inches tall with dirty-blond hair put up in a bun. He was wearing a blue, red and white short-sleeve shirt, black pants and white athletic shoes, officers said.

Anyone with information about the shooting is urged to call the Elk Grove Police Department at 916-478-8060.